Stapling plier



April 29, 1941. M. VOGEL STAPLING PLIER Filed Aug. 5, 1935 INVENTOR IIQA 'x' V1: BEL.

ATTORNEY Patented Apr. 29, 1941,

s'mrmve rum Max Vogel, Frankfort-on-the-Main, Germany Application August 5, 1935, Serial No. 34,801

7 Claims. The present invention relates to stapling pliers,

particularly of the type in which a staple strip 18 inserted and individual staples are separated therefrom and driven into the material to'be stapled. stapling pliers'heretofore in use have for the most part employed safety devices located in thefront of the staple magazine for the purpose of preventing simultaneous feeding In the drawing:

Fig. 1 is a side elevation of a stapling plier according to the exemplary illustrated embodimentof theinvention, the dot-and-dash lines showing the position of the parts as the staple dl'iver'is moved toward the anvil to grip the ma- 7 terial to be stapled.

of more than one staple into the staple driving I passage, and due to the complication of these safety devices the plier was very apt to become clogged, and removal of the clogged staples was not only difficult but apt to injure the plier structure. Also the safety devices occupied considerable room so that a structure including these devices did not lend itself to the production of a plier of compact designhaving plain outer sur- It is proposed in the present invention to dov away entirely with a safety device such as is employed in these known stapling pliers and to provide-a coverv member for the staple driving head which may be readily shifted to expose the front end of the staple magazine so that in the event of clogging the clogged staple may be readily removed. It is also an object to provide'a from the front by shifting the cover member to expose the front end of the staple magazine. Another object is to provide a cover member.

which may be automatically closedthrough the operation of the plier to drive a staple. [A further object is to provide an improved staple pusher means which may be conveniently locked in retracted position for the purpose of removing pressure on the staple strip when the cover member staple plier which may be conveniently loaded Fig. 2 is a front elevation thereof.

Fig. 3 is a top plan view, partially broken away.

Fig. 4 is a longitudinal vertical sectional view.

Fig. 5 is a transverse vertical sectional view taken along the line 55 of Fig. 4.

Fig. 6 is a fragmentary side elevation, showing the cover member in open position and abe inserted portion of a staple strip about to in the-staple magazine.

Fig. 7 is a front elevation of the in Fig. 6.

Fig. 8 is a perspective view of the cover member.

Fig. 91s a. perspective view of the staple driver.

Fig. 10 is a fragmentary perspective view of the forward end of the staple carrying rail or mgazine and the driver head.

Fig. 11 is a siddelevation of the staple strip pusher member. 7

Fig. 12 is a top plan view thereof.

Similar reference characters indicate correspending parts throughout the several figures of is opened. Another object is 't'oprovide a stapling plier in which the staple driving parts are in such relation to the anvil that the same'remain in substantially parallel relation during the material gripp n and stapling operation, to the end that the material may be more conveniently inserted in the staple plier jaw and the driving of the staple will require less pressure and be more arcuate than heretofore. Another object is to provide a staple plier in which the several parts may be conveniently assembled and disassembled for the purpose of repair or replace- 1 ment of parts. 4

With the above and other objects in view, an embodiment of the invention isshown in the accompanying drawing and this embodiment will be hereinafter more fully described with reference thereto, and the invention will be finally I pointed out in the claims.

- the drawing.

Referring to the ,drawing, the stapling pliers, according to the exemplary embodiment of the invention illustrated therein, comprises a'pair of handle members l0 and ii of channel shaped cross-section, each having opposed side portions 1 2-l2 and i3-l3 pivotally connected by a transverse pin IS. The side portions i3-l3 are provided'with forwardly projecting arms l6-|6 be tween which there is disposed a block member I! rigidly secured by cross pins [8-18, this block member supporting a forwardly projecting post [9, adapted as will hereinafter more fully appear to actuate the staple driver.

The side portions l2-l2 of the handle Ill are provided with forwardly projecting arm portions 2020 between which the lower jaw 2i of the pliers is rigidly secured by cross pins 22 and 23, this lower jaw being preferably formed of sheet metal having downwardly bent flanges which engage the arms 20-20,.and being provided hi the forward portion of its upper transverse surface with staple-leg-bending anvil grooves 24-24. A pin 25 is rigidly secured in the handle Ii and between this pin and the cross pin 23 there is secured a spring 26 which exerts plier, as shown pressure on the handle members to normally force them into open position.

The staple containing magazine member comprises a sheet metal channel member 21 of U-shape in cross-section having inwardly bent flanges 28 at its upper edges, the edges of these flanges being spaced apart as clearly shown in Fig. 5. A staple carrier bar or rail 29 of U-shape in cross-section is secured to the base of the channel member 21, the side walls of this carrier bar being spaced from the side walls of the member 21, and the upper edges of the carrier member being disposed beneath and spaced from the flanges 28-28 of the member 21, so that an inverted U-shape passage is provided for the staple strip 30, this staple strip being of the well-known type comprising a plurality of inverted U-shape staple sections secured together in strip form by suitable adhesive. At the forward end of the staple carrier bar 29, which forward end is inwardly offset from the forward edges of the sides of the channel member 21, and the base of which channel member is also inwardly offset from said forward edges of the sides, there is secured a plate 3|, the forward surface of which is set back from the forward edges of the side portions of the channel member for a distance corresponding to the thickness of a staple, and which constitutes a staple driving space in which the forward staple of the staple strip is disposed and adapted to be driven.

At the forward end of the channel member 21 there are provided a pair of upstanding supports 32-32 constituting a driver head, these supports being mounted upon and secured to the respective flanges 28-28 as by soldering, brazing, or other suitable means, and near their upper ends they are rigidly connected together by a cross pin 33. The outer side surfaces of the supports 32-32 are preferably recemed as at 34-34 to produce a pair of vertically disposed ribs 35 and 30, the outer surfaces of these ribs being flush with the outer surfaces of the side portions of the channel member 21 and the lower edges of these ribs forming with the rounded corners of the flanges 28-28 recesses 31-31, the purpose of which will be presently more fully described, The lower surfaces of the supports 32-32 are flush andcontinuous with thelower surfaces of the flanges 28-28 and their forward surfaces are provided with inwardly set recesses 38-38 in line with the surface of the plate 3| and which constitutes a slideway for the staple driver plate 35.

The staple driver 39 is provided near its upper end with a circular aperture 40 and in the assembled relation this aperture is engaged by the forward end of the post l9, this post being disposed in the space between the supports 32-32 and normally pressing upwardly upon the cross pin 33 under the pressure of the spring 26.

The channel member the rearward end of the handle l by means'of an angular spring bar 4i secured to the handle by a set-screw 42 and secured to the channel member 21 by a set-screw 43. The spring bar 4| is of such flexibility that it permits the channel member 21 to swing with be observed that the action of the spring through the handle II and post 10 pulls the channel member 21 and its associated parts upwardly through upward pressure of the post J9 upon the cross pin 33, this upward movement being limited through engagement of the upper side of the channel member 21 with the cross pin I5.

21 is flexibly connected to' The closure member for the driver head is of rectangular box-like form and comprises a forward portion 44, side portions 45-45 bent rearwardly from the vertical edges thereof, a top portion bent rearwardly from the upper edge thereof, and rearward flanges 41-41 bent inwardly from the rearward edges of the sides -45, the flanges 41-41 having their vertical edges spaced apart to provide a passage for the post l9 and having their lower edges spaced from the lower edges of thefront and side portions 44 and 45. An elongated slot 48 is provided in the front portion 44 in which is engaged the forward end of the post i9. Upon the sides 45-45 there are provided finger engaging projections 49-40 to facilitate manual shifting of the cover member from its closed to its open positions. The cover member is slidably engaged upon the driver head uprights 32-32 with the lower edges of the front and side portions 44 and 45 normally extending to the plane of the lower surface of the channel member 21, and with the lower edges of the flanges 41-41 engaged with the upper surfaces of the flanges 28-28. The cover member is retained in this position by slightly bending in the lower rearward corners 50 of the portions 45-45 so that these bent in corners hug the rounded lower corners of the channel member 21 and constitute a retaining detent. In order to raise the cover member for the purpose of exposing the forward end of the staple strip magazine, as shown in Figs. 6 and 7, the cover member is pressed upwardly, the slight springiness respect to the handle l0 as shown in dot-and-dash lines in Fig. 1. It will upper surfaces of the side of the sides 45-45 permitting the bent-in corners 50-50 to slip out of engagement with the rounded corners of the channel member 21, Upward movement of the cover member is limited by engagement of the lower end of the slot 48 with the post i9 and in the raised position the bent corners 50-50 will seat in the recesses 31-31 at the lower ends of the ribs 36-36. This engagement however will not be such as to prevent entire removal of the cover member from the upright supports 32-32 when it is desired to disassemblethe parts of the pliers. Upon removal of the post 19 from engagement with the slot 48 the cover member may be completely disengaged from the upright supports 32-32, the rounded corners 50-50 riding over the lower ends of the ribs 35-36. The cover member may be closed simply by pressing down upon it, or it will be automatically closed upon pressing the handles l0 and II together to cause the post 19 to be depressed. In this case, the post being in engagement with the lower end of the slot 48 in the raised position of the cover, downward movement of the post will force the cover member to its closed position where it will be retained by thesnapping into engagement of the bent-in corners 50-50 with the rounded corners of the channel member 21.

The staple strip pusher, shown in detail in Figs. 11 and '12, comprises an inverted U-shape channel member 5! to the upper side of which there is secured a bar 52 projecting rearwardly from the channel member 5| and provided with a finger gripping handle 53 having a forwardly projecting wedge-shaped edge portion 54, adapted in the fully retracted position of the pusher member to be hooked into hook members 55-55 formed in the rearward ends of the flanges flanges of the staple carrier bar 20 are downwardly curved or inclined at their rearward portions, as at 58, and the lower edges of the side flanges of the pusher member are inclined upwardly toward the rear, as at 51,- so that in the retracted position of the pusher membersumcient clearance is provided to permit the pusher member to be swung about the hooks 55-55 to engage or disengage its edge portion 54-therewith.- Toward its forward-end and at the under side the pushermember is provided. with an apertured lug 58 engaged. by a rod 59 disposed withinthe staple carrier 2!,this rod being secured at its rearward end to an angular bracket 50, and the latter being rigidly connected to the channel member 21 by the same set-screw 43 that secures the spring bar 4|. Complete dis-v assembly of the parts may be effected by removal of this set-screw 43. Upon the rod 59 between the lug 58 and the bracket 60 there is provided a helical spring SI which exerts forward pressureupon the pusher member, so that the latter presses the staple strip forwardly.

Beforeraising the cover member for the purpose of removing a clogged staple, or for refilling the pliers with a new staple strip, forward spring pressure upon the staple strip is relieved by pulling'thepusher member to its retracted position and securing it by engagement of the edge portion 54 with the hooks 55-55. when the clogged staple is cleared or when the new staple strip is in place, and the cover member closed, the pusher is disengaged from the hooks 55-55 and is'thereupon pressed forwardly by the spring 30 6| to feed the staple strip forwardly.

The arrangement in which the pivot l of the operating handle "is in the forwardpart of the plier structure and the swinging connection '4! of the staple carrier is at the rearward end of the handle in, while the post l9 carried by the handle H en ages the forward end of the staple carrier, results in a leverage action by which great force is applied to the staple driver with very little manual effort and at the same time the staple carrier remains in an approximately parallel relation to the lower anvil law as it moves toward and away from it. 'I'lie parts of the plier are extremely simple, the possibility of clogging staples is greatly minimized, and refilling is a very easy and convenient operation.

. I have illustrated and described a preferred and satisfactory embodiment of my invention,

but it will be obvious that changes may be made therein, within the spirit and scope thereof, as defined in the appended claims.

Having thus described my invention what I claim and desire to secure by Letters Patent is: 1. In a stapling device, a staple containing member, a staple driving head carried by said movement," driveractuating means for imparting vertical movement to said driver, a closure member for the frontend of said staple containing member slidably mounted onsaid head for vertical movement and adapted be raised and lowered thereon to respecti' uel xpose and close the front end said staple co taining member,

said closure member having a 'sl ot therein en- 65 driver mounted in said head for vertical move- 7 closure member for a height at least staple containing member at its front end, a staple driver mounted in said head for vertical ment,'driver actuating means disposed in the space between said uprights laid staple driver for imparting vertical movement thereto, a closure member for the front end of saidstaple containing member slidably mounted I onsaid head for vertical movement and'adapted to beraised and lowered, thereon to respectively expose and close the front end-of said staple containing member, said closure member having aslot therein engaged'by said driver, actuating means, the lower end of said slot adapted in the raised position of said closure member to engage said driver actuating movement of said closure member.

3i In a stapling device,- a staple containing member, a staple driving headcarried .byisaici staple containing member at its front end and comprising a pair of spaced uprights, stop 7 extending transversely across the space between -20 said uprights at their upper ends, a staple-driver mounted in said head for vertical movement, driver actuating means between said uprights and engaging said staple driver for imparting vertical movement thereto, spring means normally urging said driver actuatmg means upwardly against said stop means, a

the frontend of said staple containing member slidably mounted on said head for vertical movement and adapted to be raised and lowered thereon to respectively XpOse and close the front end of said staple containing member, said closure member having a slot therein engaged by said driver actuating means, the lower end of said slot adapted in the raised Position of said closure member to engage said driver actuating means to limit the upward movement for vertical movement and adapted to be vertically raised and lowered thereon. to respectively expose and close the open front end of said staple containing member, and comprising a rectangular box member having a vertical front wall of equal to the combined height of said head and staple containing member. 5. In a stapling device, a staple containing ember having an open front end for the insertion ofa staple strip therein, a staple driving head carried by said staple containing member at its front end comprising a vertically sided mem ber disposed at right angles to said staple containing member, and a manually operable clo-' sure member for the front end of said staple containing member slidably mounted on ,said head for vertical movement and adapted to be vertically raised and lowered thereon to respectively expose and close the open front end of said staple containing member for the insertion'of a staple strip, and comprising a rectangular box member having a vertical front wall of a-height at-least equal to the combined height of said head and staple containing member, side walls,

and a rear wall adapted to engage the upper surface of said staple containing member in the closed position of said closure member.

6. In a stapling device, a staple containing member, a staple-driving head carried by said means to limit the upward.

disposed in the space.

staple containing member at its front end comprising a vertically sided member disposed at right angles to said staple containing member, and a closure member for the front end of said staple containing member slidably mounted on said head for vertical movement and adapted to be raised and lowered thereon to respectively expose and close the front end of said staple containing member, and comprising a rectangular box member having a vertical front wall of a height at least equal to the combined height of said head and staple containing member, and springy side walls adapted to extend to the lower edge of said staple containing member in the closed position of said closure member, the lower corners of said staple rounded, and the lower edges of said side walls being bent inwardly to grip said rounded corners.

LiIn stapling pliers, upper and lower handle members each having a pair of spaced side por tions, the side portions of one handle being disposed between the side portions of the other, a

containing member being iii transverse pivot pin connecting said side portions, a lower anvil jaw carried by the side portions of the upper handle member, an upper staple driver member carried by the side portions of the lower handle member, spring means connected between said handle members normally urging said anvil jaw and staple driver member away from each other, a staple containing member swingingly connected at its rearward end to the rearward end of said upper handle member, staple driving head at the forward end of said staple containing member engaged by said staple driver member, said spring means normally urging said head and staple containing member upwardly to engage said staple containing member with said transverse pin to limit the open position of the handle members, closing movement of said handle members adapted to swing said head and staple containing member downwardly away from said transverse pin and toward said anvil jaw.

- MAX VOGEL. 

